DE102007054736A1 - Process for hardening groove flanks of the annular groove of a steel piston - Google Patents
Process for hardening groove flanks of the annular groove of a steel piston Download PDFInfo
- Publication number
- DE102007054736A1 DE102007054736A1 DE102007054736A DE102007054736A DE102007054736A1 DE 102007054736 A1 DE102007054736 A1 DE 102007054736A1 DE 102007054736 A DE102007054736 A DE 102007054736A DE 102007054736 A DE102007054736 A DE 102007054736A DE 102007054736 A1 DE102007054736 A1 DE 102007054736A1
- Authority
- DE
- Germany
- Prior art keywords
- groove
- groove flank
- process gas
- steel piston
- flank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/10—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass pistons
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2221/00—Treating localised areas of an article
Abstract
Vorgeschlagen wird ein Verfahren zum Härten von Nutflanken der Ringnut (11) eines Stahlkolbens (5) mittels eines Laserstrahles (3), wobei zunächst sauerstoffhaltiges Prozessgas auf eine Nutflanke (10) des Stahlkolbens (5) geleitet und der Stahlkolben (5) in Drehung versetzt wird. Hierbei wird die Nutflanke (1) mit dem Laserstrahl (3) bestrahlt, bis sich auf der Nutflanke eine Oxidschicht gebildet hat. Anschließend wird die Zuführung des Prozessgases abgeschaltet und die Nutflanke (10) spurweise erhitzt und gehärtet. Durch die Oxidschicht auf der Nutflanke wird zum einen der Wärmeeinkopplungsgrad der Nutflanke verbessert, was ein schnelleres Erhitzen und Härten der Nutflanke bewirkt. Zum anderen wird dadurch die Reflektivität der Nutflanke reduziert, sodass nur noch wenig Licht von der Nutflanke auf andere Bereiche der Nut reflektiert wird, sodass diese Bereiche nicht ungewollt erhitzt und gehärtet werden.Proposed is a method for hardening groove flanks of the annular groove (11) of a steel piston (5) by means of a laser beam (3), wherein first oxygen-containing process gas passed to a groove flank (10) of the steel piston (5) and the steel piston (5) is rotated becomes. In this case, the groove flank (1) is irradiated with the laser beam (3) until an oxide layer has formed on the groove flank. Subsequently, the supply of the process gas is switched off and the groove flank (10) is heated and hardened by the trace. The oxide layer on the groove flank firstly improves the degree of heat input of the groove flank, which causes faster heating and hardening of the groove flank. On the other hand, the reflectivity of the groove flank is thereby reduced, so that only a small amount of light is reflected from the groove flank to other regions of the groove, so that these regions are not unintentionally heated and hardened.
Description
Die Erfindung betrifft ein Verfahren zum Härten von Nutflanken der Ringnut eines Stahlkolbens nach dem Oberbegriff des Anspruches 1.The The invention relates to a method for hardening groove flanks the annular groove of a steel piston according to the preamble of the claim 1.
Aus
der Offenlegungsschrift,
Diese Nachteile des Standes der Technik zu vermeiden, ist Aufgabe der Erfindung. Gelöst wird diese Aufgabe mit den im Kennzeichen des Hauptanspruches stehenden Merkmalen. Zweckmäßige Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.These Disadvantages of the prior art to avoid is the task of Invention. This task is solved with the license plate of the main claim standing features. expedient Embodiments of the invention are the subject of the dependent claims.
Dadurch, dass gemäß der Erfindung die zu härtende Nutflankenfläche des Stahlkolbens mittels Eisenoxid eingefärbt wird, erhöht sich deren Wärmeeinkopplungsgrad so weit und reduziert sich zudem deren Reflektivität so sehr, dass das Laserlicht unabhängig von dessen Wellenlänge unter einem beliebigen Einfallswinkel auf die zu härtende Nutflankenfläche gestrahlt werden kann.Thereby, that according to the invention, the to be cured Nutflankenfläche the steel piston colored by means of iron oxide becomes, their Wärmeeinkopplungsgrad increases so far and also reduces their reflectivity so very much that the laser light regardless of its wavelength at any angle of incidence on the to be hardened Nutflankenfläche can be blasted.
Ein Ausführungsbeispiel der Erfindung wird im Folgenden anhand der Zeichnungen beschrieben. Es zeigenOne Embodiment of the invention will be described below of the drawings. Show it
Weiterhin
ist an der Haltevorrichtung
Als
Laserquelle
Hierbei
wird von dem kleinen Brennfleck des Laserstrahls
Während
dieses Härteprozesses wird über die Gasdüse
Das
Prozessgas bewirkt hierbei, dass sich die vom Laserstrahl
Das
erfindungsgemäße Verfahren, die Nutflanke
- αα
- Einfallswinkelangle of incidence
- 11
- Haltvorrichtungholding device
- 22
- Laserquellelaser source
- 3, 3'3, 3 '
- Laserstrahllaser beam
- 44
- Gasdüsegas nozzle
- 55
- Kolben, StahlkolbenPiston, steel pistons
- 66
- Drehtellerturntable
- 77
- Fundamentfoundation
- 88th
- Gasleitunggas pipe
- 99
- Stativtripod
- 1010
- untere Flanke, Nutflankelower Flank, groove flank
- 1111
- obere Ringnutupper ring groove
- 1212
- Klemmhalterungclamp
- 1313
- Kolbenachsepiston axis
- 1414
- Nutgrundgroove base
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 10337962 A1 [0002] DE 10337962 A1 [0002]
Claims (5)
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007054736A DE102007054736A1 (en) | 2007-11-16 | 2007-11-16 | Process for hardening groove flanks of the annular groove of a steel piston |
BRPI0819334 BRPI0819334A2 (en) | 2007-11-16 | 2008-11-13 | Process for hardening annular groove flanges of a steel piston annular groove by means of a laser beam |
EP08849329.1A EP2217733B1 (en) | 2007-11-16 | 2008-11-13 | Process for hardening groove flanks of the annular groove of a steel piston by means of a laser beam |
PCT/DE2008/001869 WO2009062486A1 (en) | 2007-11-16 | 2008-11-13 | Process for hardening groove flanks of the annular groove of a steel piston by means of a laser beam |
CN200880116312A CN101861403A (en) | 2007-11-16 | 2008-11-13 | Process for hardening groove flanks of the annular groove of a steel piston by means of a laser beam |
US12/291,735 US20090139610A1 (en) | 2007-11-16 | 2008-11-13 | Method for hardening groove walls of the ring groove of a steel piston |
KR1020107011583A KR20100087186A (en) | 2007-11-16 | 2008-11-13 | Process for hardening groove flanks of the annular groove of a steel piston by means of a laser beam |
JP2010533429A JP2011504568A (en) | 2007-11-16 | 2008-11-13 | Method of hardening the side surface of a ring-shaped groove of a steel piston with a laser beam |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007054736A DE102007054736A1 (en) | 2007-11-16 | 2007-11-16 | Process for hardening groove flanks of the annular groove of a steel piston |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102007054736A1 true DE102007054736A1 (en) | 2009-05-20 |
Family
ID=40377371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007054736A Withdrawn DE102007054736A1 (en) | 2007-11-16 | 2007-11-16 | Process for hardening groove flanks of the annular groove of a steel piston |
Country Status (8)
Country | Link |
---|---|
US (1) | US20090139610A1 (en) |
EP (1) | EP2217733B1 (en) |
JP (1) | JP2011504568A (en) |
KR (1) | KR20100087186A (en) |
CN (1) | CN101861403A (en) |
BR (1) | BRPI0819334A2 (en) |
DE (1) | DE102007054736A1 (en) |
WO (1) | WO2009062486A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019133522A1 (en) * | 2019-12-09 | 2021-06-24 | Federal-Mogul Nürnberg GmbH | Method for producing a piston for an internal combustion engine and a piston for an internal combustion engine |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010060385A1 (en) * | 2010-11-05 | 2012-05-10 | Dorma Gmbh + Co. Kg | UV laser exposure of housings and components of door drives and door closers |
US20140261283A1 (en) * | 2013-03-14 | 2014-09-18 | Federal-Mogul Corporation | Piston and method of making a piston |
CN103934553B (en) * | 2014-04-29 | 2016-08-17 | 南通迪施有限公司 | Steel piston annular groove is welded with evanohm technique |
JP2016079473A (en) * | 2014-10-17 | 2016-05-16 | 住友電工焼結合金株式会社 | Laser hardening method |
CN106256755B (en) * | 2015-06-19 | 2018-08-31 | 强哲菲 | Transhipment fork truck and Piston Machining production line for Piston Machining production line |
CN109593919B (en) * | 2018-12-18 | 2020-04-17 | 中国船舶重工集团公司第七二五研究所 | Bearing surface laser quenching device and method based on distributed three-dimensional light beam scanning |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04276011A (en) * | 1991-03-04 | 1992-10-01 | Nissan Motor Co Ltd | Laser beam machining method |
DE19508584C1 (en) * | 1995-03-13 | 1996-02-08 | Fraunhofer Ges Forschung | Method and appts. for increasing the degree of absorption during solid-phase surface hardening of workpieces |
DE4434591A1 (en) * | 1994-09-28 | 1996-04-04 | Dirk Schlebeck | Ferrous metal laser hardening process |
DE10337962A1 (en) | 2003-08-19 | 2005-03-17 | Mahle Gmbh | A method for hardening the side walls of steel piston ring grooves has a diode laser directed at a precise angle to the groove surface |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4877939A (en) * | 1987-01-30 | 1989-10-31 | Duley Walter W | Means of enhancing laser processing efficiency of metals |
US4857699A (en) * | 1987-01-30 | 1989-08-15 | Duley Walter W | Means of enhancing laser processing efficiency of metals |
US4972061A (en) * | 1987-12-17 | 1990-11-20 | Duley Walter W | Laser surface treatment |
JPH02104612A (en) * | 1988-10-12 | 1990-04-17 | Toshiba Corp | Laser beam quenching method |
US5515770A (en) * | 1994-12-05 | 1996-05-14 | Clark Industries, Inc. | Piston having laser hardened primary compression ring groove and method of making same |
JPH107478A (en) * | 1996-06-20 | 1998-01-13 | Taiyo Yuden Co Ltd | Metallization of aluminum nitride substrate and aluminum nitride substrate |
JPH116890A (en) * | 1997-06-17 | 1999-01-12 | Mitsubishi Nuclear Fuel Co Ltd | Laser marking method for cladding tube |
DE19918808A1 (en) * | 1999-04-26 | 2000-11-02 | Mahle Gmbh | Process for hardening ring grooves with laser beams |
JP2001085435A (en) * | 1999-09-17 | 2001-03-30 | Sanyo Electric Co Ltd | Semiconductor device and manufacturing method therefor |
EP2024522B1 (en) * | 2006-06-03 | 2017-11-29 | KS Kolbenschmidt GmbH | Process for hardening an annular groove of a piston head by means of laser beams |
-
2007
- 2007-11-16 DE DE102007054736A patent/DE102007054736A1/en not_active Withdrawn
-
2008
- 2008-11-13 JP JP2010533429A patent/JP2011504568A/en active Pending
- 2008-11-13 BR BRPI0819334 patent/BRPI0819334A2/en not_active IP Right Cessation
- 2008-11-13 CN CN200880116312A patent/CN101861403A/en active Pending
- 2008-11-13 WO PCT/DE2008/001869 patent/WO2009062486A1/en active Application Filing
- 2008-11-13 EP EP08849329.1A patent/EP2217733B1/en not_active Revoked
- 2008-11-13 KR KR1020107011583A patent/KR20100087186A/en not_active Application Discontinuation
- 2008-11-13 US US12/291,735 patent/US20090139610A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04276011A (en) * | 1991-03-04 | 1992-10-01 | Nissan Motor Co Ltd | Laser beam machining method |
DE4434591A1 (en) * | 1994-09-28 | 1996-04-04 | Dirk Schlebeck | Ferrous metal laser hardening process |
DE19508584C1 (en) * | 1995-03-13 | 1996-02-08 | Fraunhofer Ges Forschung | Method and appts. for increasing the degree of absorption during solid-phase surface hardening of workpieces |
DE10337962A1 (en) | 2003-08-19 | 2005-03-17 | Mahle Gmbh | A method for hardening the side walls of steel piston ring grooves has a diode laser directed at a precise angle to the groove surface |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019133522A1 (en) * | 2019-12-09 | 2021-06-24 | Federal-Mogul Nürnberg GmbH | Method for producing a piston for an internal combustion engine and a piston for an internal combustion engine |
DE102019133522B4 (en) | 2019-12-09 | 2023-04-20 | Federal-Mogul Nürnberg GmbH | Method of manufacturing a piston for an internal combustion engine and Pistons for an internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
JP2011504568A (en) | 2011-02-10 |
KR20100087186A (en) | 2010-08-03 |
WO2009062486A1 (en) | 2009-05-22 |
CN101861403A (en) | 2010-10-13 |
US20090139610A1 (en) | 2009-06-04 |
EP2217733A1 (en) | 2010-08-18 |
EP2217733B1 (en) | 2016-11-02 |
BRPI0819334A2 (en) | 2015-05-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
R005 | Application deemed withdrawn due to failure to request examination | ||
R005 | Application deemed withdrawn due to failure to request examination |
Effective date: 20141118 |